As long as restaurants are mindful of the unappetizing harsh blue glow that dozens of iPads would create at night in an otherwise warm and cozy atmosphere.
Aside from how much I hate digital screens at a dining experience, there would be great potential for features that sync with a customer’s iPhone. Such as paying with your iPhone or with a plugin credit card reader, or downloading your meal’s details to your iPhone, or emailing it to yourself to remember for next time or share with friends.